Cisco VWIC3-2MFT-T1/E1 2-Port Multiflex Trunk Voice/WAN Interface

PRODUCT OVERVIEW

These flexible interface cards support multiple integrated data, voice and video applications, facilitating the migration from data only as well as circuit-switched voice/video services to a packet voice/video solution

eliminates costly external third-party channel service units/data service units
(CSUs/DSUs) and drop-and-insert multiplexers.

Each call on the PRI is individually indicated as being a voice, video or data call with the ISDN bearer capability delivered with the call. Signaling is done on the D-channel, which is always channel 24
on a T1, and channel 31 on an E1.